. >> reporter: uma, the fbi is looking into the background of paul ciancia, they believe is the gunman. that's how they identified him yesterday. they're also searching his apartment which is just east of hollywood here. they believe that after messages he stoent his family that his intent was to harm tsa agents and as he went through the airport yesterday, that is what he appeared to exactly be targeting. the los angeles times is pointing out, quoting officials saying that's what the tsa firmly believes and we're hearing via local radio from passengers who say that as he went to the airport, he was asking individuals if they were tsa and they were saying no and he was moving on looking as it appears for officials. we also looking into -- rather, the fbi is looking into just what exactly his motivation could have been. they're looking at whether he had an issue or run-in at a tsa checkpoint at an airport at some point in the past. they're looking if he may have been a job applicant who was turned down and the police officer was telling me yesterday that as to whether he might have been